A scanned image of all invoices is created so it is important that the invoice is of good quality and easy to read. We recommend that the invoice is on white A4 paper, clearly printed in black and that highlighters have not been used

It is the British Library policy that all sums due to its suppliers will become due for payment 30 days after the date of the suppliers correct invoice. However, where clauses are agreed which vary the terms of payment, these will be honoured.

Our terms of trade also include provision for late payment in accordance with the November 1998 Act of Parliament

The British Library reserves the right to withhold payment where the goods or services have not been provided in accordance with the contract

We expect our suppliers to pay any sums due to sub-contractors promptly and within a period not exceeding that set out above